CN102589796A - Online monitoring system of vacuum degree of vacuum switch - Google Patents
Online monitoring system of vacuum degree of vacuum switch Download PDFInfo
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- CN102589796A CN102589796A CN2012100391523A CN201210039152A CN102589796A CN 102589796 A CN102589796 A CN 102589796A CN 2012100391523 A CN2012100391523 A CN 2012100391523A CN 201210039152 A CN201210039152 A CN 201210039152A CN 102589796 A CN102589796 A CN 102589796A
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Abstract
The invention discloses an online monitoring system of a vacuum degree of a vacuum switch. A vacuum degree sensing signal for reflecting the vacuum degree of the vacuum switch is acquired by a sampling resistor at a high voltage end, then the vacuum degree sensing signal is converted into digital vacuum degree sensing data by a signal acquisition plate, and the acquired vacuum degree sensing data is sent by an infrared signal; the infrared signal from the high voltage end is received by an infrared signal receiving module at a low voltage end; the acquired vacuum degree sensing data is obtained and transmitted to a signal processing and displaying circuit board for processing; and the monitored vacuum degree of the vacuum switch is displayed, so that the online monitoring of the vacuum degree of the vacuum switch is realized. The online monitoring system disclosed by the invention comprises two transmission channels of which one is a signal transmission channel and the other one is a light energy transmission channel; electrical isolation from the high voltage end, namely the signal acquisition end, to the low voltage end, namely one side of an operator, is realized; and the safety in operation is improved.
Description
Technical field
The invention belongs to the on-line monitoring technique field, more specifically, relate to a kind of vacuum degree of vacuum switch on-line monitoring system.
Background technology
Vacuum switch pressure field in low pressure reaches is extremely promising a kind of switching device, and the switchgear as a new generation, advanced is widely used in the present electric network reconstruction of China.
Vacuum degree of vacuum switch, promptly the vacuum tightness in its arc-chutes is one of principal element of its electric property of decision.The deterioration of vacuum tightness in the arc-chutes, not only reduced the ability of vacuum switch withstand long term exposure system voltage and in operational process the inside and outside superpotential ability of tolerance, and difficulty open failure electric current effectively extremely.Therefore the users of vacuum switch press for operating vacuum degree of vacuum switch are monitored.
At present, from the big aspect, can be divided into two big types of off-line monitoring and on-line monitorings concerning the monitoring method of vacuum degree of vacuum switch.
1, off-line monitoring
The method of off-line monitoring has a lot, and develop also comparative maturity, wherein the magnetic charging method is a kind of repeatability method for quantitative measuring preferably.But the drawback of the maximum of off-line monitoring is exactly this monitoring method must be under powering-off state, to carry out, and can not monitor vacuum tightness in real time, can't truly get rid of the danger that causes because of the vacuum tightness reduction.
2, on-line monitoring
And on-line monitoring is owing to will monitor the variation of its vacuum tightness at any time under the prerequisite of not changing vacuum switch agent structure and running status.The method that is used for the vacuum degree of vacuum switch on-line monitoring mainly contains electro-optical conversion method, coupling capacitance method etc.
The electro-optical conversion method is based on " electrooptical effect " principle; Utilize some optical element; In electric field, can change optical property like the Pockels element; Thereby convert the electric field change corresponding the variation of luminous flux to, but that the subject matter of this method is poor work stability, the cost of optical element is high with vacuum tightness.
The coupling capacitance method puts forward according to the measurement of partial discharge principle.If when the compressive resistance between charged contact to the intershield cover of tested vacuum interrupter descends owing to vacuum tightness reduces; Then when power-frequency voltage rises to a certain value from zero point; Equivalent capacitance between charged contact and the radome discharges, and this local discharge signal can carry out on-line monitoring through two shelf depreciation probes between radome and ground connection case shell.The subject matter of this method is that the sensitivity of its measurement awaits to verify further.
In addition, common vacuum degree of vacuum switch method of testing also has: the criterion of industrial frequency withstand voltage method, observation, spark meter method, getter change color, magnetic charging method or the like.
On June 21st, 2000 Granted publication, Granted publication number is in the Chinese utility model patent instructions of CN 2384307Y; Announced that a kind of name is called " vacuum switch tube that has the gamut sensor "; At the quiet end of vacuum switch tube body the gamut sensor is installed; Said gamut sensor has a ring-type porcelain shell; The inwall of said porcelain shell lets two positive plate pilot hole, porcelain shell upper surfaces that are positioned at same center of circle line that two minus plate pilot holes are arranged; On the bottom surface of porcelain shell and end face, be welded with anode seal cap and negative electrode sealing bore respectively, corresponding position of positioning hole is placed with the positive plate that an elliptical aperture is arranged at the bottom in the porcelain shell, and the bottom of said positive plate is welded on the anode seal cap, the top is stretched in the negative electrode sealing bore; On negative electrode sealing bore inwall, be welded with two minus plates parallel with positive plate, insert in the minus plate pilot hole bottom of said minus plate.When line vacuum was monitored, position, the left and right sides, hole was placed with the permanent-magnetic field parallel with positive plate respectively on corresponding positive plate on the negative electrode sealing bore.Because there is alternating voltage over the ground in supply line, has the 5730V alternating voltage over the ground like 10KV supply line, according to the Penning discharge principle, this voltage produces the ion flow of rotation in the hole, and gas density is big more, and ion flow is big more.
On Dec 06th, 2000 Granted publication, Granted publication number is in the Chinese utility model patent instructions of CN 2409528Y, announced that a kind of name is called " the 10KV vacuum switch is at the line vacuum monitoring device ".As shown in Figure 1, an end of ion column links to each other with the positive plate of the gamut sensor of vacuum switch tube, other end ground connection, and voltage between phases is 10KV/35KV; Each exists 5730V or higher alternating voltage over the ground, through the gamut sensor, corresponding to the pressure in the difference pipe; In ion column, produce corresponding ion flow, carry out the electric signal sampling through sample resistance after, through signals collecting; After the processing, finally show, realize on-line monitoring.
Fig. 2 is the electrical schematic diagram of ion column shown in Figure 1, and it is by insulation crust, and the divider resistance, diode, sample resistance and the isolation resistance that are fastened on successively in the insulation crust are formed.As shown in Figure 2; The vacuum degree of vacuum switch on-line monitoring is that the anode at the gamut sensor connects ion column; At the sample resistance place of ion column is the sampled voltage that the signals collecting end is obtained the reflection vacuum degree of vacuum switch, accomplishes through signals collecting, processing, demonstration then.But the signals collecting end exist to leak the possibility of high pressure, in case break down, operating personnel's life safety is caused great threat.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of vacuum degree of vacuum switch on-line monitoring system is provided, to improve the security of operation.
For realizing the foregoing invention purpose, vacuum degree of vacuum switch on-line monitoring system of the present invention comprises:
One gamut sensor is used to obtain the high pressure transducing signal that reflects vacuum degree of vacuum switch;
One ion column, an end are connected to high pressure transducing signal, the other end ground connection of gamut sensor, and its sample resistance two ends obtain the vacuum tightness transducing signal of reflection vacuum degree of vacuum switch as the signals collecting end;
One signal Processing, display circuit board;
It is characterized in that, also comprise:
One signal acquiring board is connected with the signals collecting end, is used for the vacuum tightness transducing signal on the signals collecting end is gathered, and converts the vacuum tightness sensing data of numeral into; Have a storage capacitor on the signal acquiring board;
One LED circuitboard, signal Processing, display circuit board are that LED circuitboard is supplied power, and the lumination of light emitting diode on it makes electric energy convert luminous energy into;
One silicon light solar panel receives the luminous energy of light emitting diode, and converts electric energy into; Again to the storage capacitor charging of signal acquiring board, after the voltage on the storage capacitor reached predetermined value, the signal acquisition circuit plate was started working, and gathers behind the silicon light solar panel acquisition energy;
One infrared signal sending module is connected with the signal acquisition circuit plate, is used for the vacuum tightness sensing data that collects is sent through infrared signal;
One infrared signal receiver module is used to receive infrared signal, the vacuum tightness sensing data that obtains gathering, and be transferred to signal Processing, display circuit board is handled, and demonstrates the vacuum degree of vacuum switch of monitoring, realizes on-line monitoring.
Vacuum tightness sensing data collection activity finishes, and the light emitting diode that is used for the energy transmission extinguishes, and the signal acquisition circuit plate does not have electricity and quits work.
Goal of the invention of the present invention is achieved in that
Vacuum degree of vacuum switch on-line monitoring system of the present invention; Form high-pressure side by gamut sensor, ion column and signal acquiring board and silicon light solar panel, infrared signal transmitter module; Obtain the vacuum tightness transducing signal of reflection vacuum degree of vacuum switch through sample resistance at high-pressure side; Convert the vacuum tightness sensing data of numeral then into through signal acquiring board, the vacuum tightness sensing data that collects sends through infrared signal; Form low pressure end by signal Processing, display circuit board, LED circuitboard and infrared signal receiver module; Receive infrared signal at low pressure end through the infrared signal receiver module from high-pressure side; The vacuum tightness sensing data that obtains gathering; And be transferred to signal Processing, display circuit board is handled, and demonstrates the vacuum degree of vacuum switch of monitoring, realizes on-line monitoring.There is the possibility of leaking high pressure in the collection of vacuum tightness sensing data; In case break down; Life safety to operating personnel causes great threat, thus must increase strong and effective high pressure quarantine measures in operating personnel's one side, to guarantee operating personnel's life safety.In the present invention, from the processing that collects low pressure end vacuum tightness sensing data of the vacuum tightness sensing data of high-pressure side, show and comprise two transmission channel, one is signal transmission pathway, and other one the tunnel is the luminous energy transmission channel.Signal transmission pathway can certainly realize gathering the high pressure isolation of vacuum tightness sensing data through modes such as optical fiber through infrared mode; The power supply of signal acquiring board is then cumbersome; The small size transformer will be isolated so, and high voltage almost is unpractical; And the required power of signal acquiring board is very little when considering final volume production, and the frequency of collection can be too not frequent yet, and a low power silicon light solar cell is installed on the signal acquiring board among the present invention for this reason can plate; For signal acquiring board is supplied power, and silicon light solar panel is through the luminous illumination that provides of LED circuitboard energy to be provided.Realized that like this high-pressure side is that the signals collecting end is the electrical isolation of operating personnel's one side to low pressure end, improved the security of operation.
Description of drawings
Fig. 1 is the schematic diagram of the vacuum degree of vacuum switch on-line monitoring system of prior art;
Fig. 2 is the electrical schematic diagram of ion column shown in Figure 1;
Fig. 3 is the structural drawing of a kind of embodiment of vacuum degree of vacuum switch on-line monitoring system of the present invention;
Fig. 4 is the fundamental diagram of vacuum degree of vacuum switch on-line monitoring system shown in Figure 3.
Fig. 5 is gas pressure intensity and the graph of a relation of ion flow under vacuum degree of vacuum switch on-line monitoring system one embodiment shown in Figure 3.
Embodiment
Describe below in conjunction with the accompanying drawing specific embodiments of the invention, so that those skilled in the art understands the present invention better.What need point out especially is that in the following description, when perhaps the detailed description of known function and design can desalinate main contents of the present invention, these were described in here and will be left in the basket.
Embodiment
Fig. 3 is the structural drawing of vacuum degree of vacuum switch on-line monitoring system of the present invention.
In the present embodiment, as shown in Figure 1, in the time will letting signal acquiring board 1 work; Earlier use signal Processing, display board 2 to supply power as LED circuitboard 3, the lumination of light emitting diode on it makes electric energy convert luminous energy into; Silicon light solar panel 4 receives illumination; Making transform light energy again is electric energy, the charging of the storage capacitor on signal acquiring board 1 again behind the silicon light solar panel 4 acquisition energy, and signal acquiring board 1 is started working after the voltage on the storage capacitor reaches predetermined value; And the vacuum tightness sensing data that collects sent to infrared signal receiver module 6 through infrared signal sending module 5 usefulness infrared signals; Be transferred to signal Processing, display board 2 at last, this collection activity finished after signal Processing, display board 2 were received infrared signal, and signal Processing, display board 2 stop to supply power for LED circuitboard 3; Light emitting diode on it extinguishes, and signal acquiring board 1 no electricity quits work.Signal Processing, display board 2 can be used the identical method signal of a plurality of signal acquiring boards 1 of reception continuously, and the vacuum tightness sensing data that collects was stored, shown or transmit to host computer on request by the time.Like this; As long as the air insulated distance of signal acquiring board 1 and signal Processing, display board 2 can guarantee, just fully guaranteed the electrical isolation between the two, even can accomplish the signals collecting end; Be that high-pressure side breaks down; High pressure is crosstalked into signal acquiring board 1, also can guarantee the operating personnel's of signal Processing, demonstration side life safety, has solved this most important factor of security that its online vacuum tightness detects.
Fig. 4 is the fundamental diagram of vacuum degree of vacuum switch on-line monitoring system shown in Figure 3.
In the present embodiment, as shown in Figure 4, when needs carry out the collection of vacuum tightness sensing data; Lumination of light emitting diode on the circuit of LED 3, the luminous energy transmission is received by silicon light solar panel 4; Be signal acquiring board 1 power supply then, promptly to the storage capacitor charging, signal acquiring board 1 is started working after the voltage on the storage capacitor reaches predetermined value; And the vacuum tightness sensing data that collects sent with infrared signal, after the signal transmission, receive by infrared signal receiver module 6; And be transferred to signal Processing, display board 2, after signal Processing, display board 2 are received infrared signal, through the processing of vacuum tightness sensing data; Finally show, realize the vacuum degree of vacuum switch on-line monitoring.When this collection activity finished, signal Processing, display board 2 stopped to supply power for LED circuitboard 3, and the light emitting diode on it extinguishes, and signal acquiring board 1 no electricity quits work.
In the present embodiment, 24 light emitting diodes of LED circuitboard 3 usefulness constitute, and it is LW514 that light emitting diode adopts the model of SSC company (SSC), and the characteristics that it has high brightness are up to 25, and 000mcd is suitable for power transfer of the present invention.Silicon light solar panel 4 adopts polysilicon 35mm * 5mm, and storage capacitor adopts the electrochemical capacitor of two 1000u/6.3V to compose in parallel.Infrared signal sending module, receiver module model adopt the GL4800E0000F of Japanese Sharp company and the TSOP123 of U.S. Vishay company respectively, form two transmission channels like this.
Fig. 5 is gas pressure intensity and the graph of a relation of ion flow under vacuum degree of vacuum switch on-line monitoring system one embodiment shown in Figure 3.
In the present embodiment, as shown in Figure 5, ion flow is with the increase of gas pressure intensity, and promptly reducing of vacuum tightness and increasing through measuring the size of ion flow, can obtain the size of vacuum degree of vacuum switch.Concrete measurement ion flow is to realize through the voltage of the sample resistance of measuring gas ions, and is specifically as shown in table 1.
| Vacuum tightness＜5 * 10 -3Pa | Voltage＜1.5 |
| Vacuum tightness | |
| 5 * 10 -3Pa | Voltage 1.5V～2.5 |
| Vacuum tightness | |
| 1 * 10 -2Pa | Voltage 2.5V～ |
| Vacuum tightness | |
| 5 * 10 -2Pa | Voltage 4V～4.5 |
| Vacuum tightness | |
| 1 * 10 -1Pa | Voltage 4.5V～5V |
| Vacuum tightness＞1 * 10 -1Pa | Voltage 5V～6V |
Table 1
Table 1 has reflected gas pressure intensity, i.e. vacuum tightness and sampling voltage, i.e. vacuum tightness transducing signal relation.
Prior art is the collection of on voltage range, carrying out a point like the above vacuum degree of vacuum switch on-line monitoring system of background technology, and then compares with each step voltage, shows to have accidental error property at last.In the present embodiment; All be converted into digital signal to the vacuum tightness transducing signal; On the basis of physics digital; Then on signal Processing, display circuit board through the vacuum tightness sensing data of repeatedly gathering is averaged, show thereby eliminated the mistake that accidental error brings, improved the precision of monitoring.Simultaneously, as shown in Figure 3, between signal transmission pathway and power transfer path, division board is arranged, physically two transmission channels are being isolated, making between two paths does not have mutual interference, and a nearly step guarantees the accuracy requirement of signal transmission.
The vacuum degree of vacuum switch on-line monitoring system has guaranteed not only and primary side that promptly the high-voltage electrical apparatus of high-pressure side is isolated, and has ensured secondary side; Be low pressure end operating personnel's life safety; Simultaneously, the interference between the two, the transmission precision of gas clean-up sensing data can be effectively eliminated in the isolation of two-way transmission channel; The transmission error of erasure signal has realized and high-pressure side electrical isolation, high-precision on-line monitoring.
Although above the illustrative embodiment of the present invention is described; So that the technician in present technique field understands the present invention, but should be clear, the invention is not restricted to the scope of embodiment; To those skilled in the art; As long as various variations appended claim limit and the spirit and scope of the present invention confirmed in, these variations are conspicuous, all utilize innovation and creation that the present invention conceives all at the row of protection.
Claims (4)
1. vacuum degree of vacuum switch on-line monitoring system comprises:
One gamut sensor is used to obtain the high pressure transducing signal that reflects vacuum degree of vacuum switch;
One ion column, an end are connected to high pressure transducing signal, the other end ground connection of gamut sensor, and its sample resistance two ends obtain the vacuum tightness transducing signal of reflection vacuum degree of vacuum switch as the signals collecting end;
One signal Processing, display circuit board;
It is characterized in that, also comprise:
One signal acquiring board is connected with the signals collecting end, is used for the vacuum tightness transducing signal on the signals collecting end is gathered, and converts the vacuum tightness sensing data of numeral into; Have a storage capacitor on the signal acquiring board;
One LED circuitboard, signal Processing, display circuit board are that LED circuitboard is supplied power, and the lumination of light emitting diode on it makes electric energy convert luminous energy into;
One silicon light solar panel receives the luminous energy of light emitting diode, and converts electric energy into; Again to the storage capacitor charging of signal acquiring board, after the voltage on the storage capacitor reached predetermined value, the signal acquisition circuit plate was started working, and gathers behind the silicon light solar panel acquisition energy;
One infrared signal sending module is connected with the signal acquisition circuit plate, is used for the vacuum tightness sensing data that collects is sent through infrared signal;
One infrared signal receiver module is used to receive infrared signal, the vacuum tightness sensing data that obtains gathering, and be transferred to signal Processing, display circuit board is handled, and demonstrates the vacuum degree of vacuum switch of monitoring, realizes on-line monitoring.
2. vacuum degree of vacuum switch on-line monitoring system according to claim 1 is characterized in that, vacuum tightness sensing data collection activity finishes, and the light emitting diode that is used for the energy transmission extinguishes, and the signal acquisition circuit plate does not have electricity and quits work.
3. vacuum degree of vacuum switch on-line monitoring system according to claim 1; It is characterized in that; Between signal transmission pathway and power transfer path, division board is arranged, physically two transmission channels are being isolated, making between two paths does not have mutual interference.
4. vacuum degree of vacuum switch on-line monitoring system according to claim 1; It is characterized in that; On signal Processing, display circuit board, through the vacuum tightness sensing data of repeatedly gathering is averaged, show, improved the precision of monitoring thereby eliminated the mistake that accidental error brings.
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| CN201210039152.3A CN102589796B (en) | 2012-02-21 | 2012-02-21 | Online monitoring system of vacuum degree of vacuum switch |
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| CN201210039152.3A CN102589796B (en) | 2012-02-21 | 2012-02-21 | Online monitoring system of vacuum degree of vacuum switch |
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| CN102589796B CN102589796B (en) | 2015-01-21 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103646819A (en) * | 2013-12-13 | 2014-03-19 | 成都旭顺电子有限责任公司 | Vacuum switch vacuum degree on-line monitoring system |
| CN105277873A (en) * | 2015-10-12 | 2016-01-27 | 三峡大学 | Device for evaluating insulating property of vacuum circuit breaker |
| CN113707494A (en) * | 2021-09-09 | 2021-11-26 | 西安交通大学 | Vacuum degree detection device with vacuum arc-extinguishing chamber embedded electrode and method |
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| CN2264934Y (en) * | 1995-01-13 | 1997-10-15 | 西安交通大学 | Photo-translating, exposure controllable synchronous sampling-hold device |
| CN2384307Y (en) * | 1999-07-20 | 2000-06-21 | 潘有顺 | Vacuum switching tube with all range sensor |
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2012
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Patent Citations (4)
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| CN2081089U (en) * | 1990-09-03 | 1991-07-17 | 东南大学 | In-line detector for vacuity of vacuum switch |
| CN2264934Y (en) * | 1995-01-13 | 1997-10-15 | 西安交通大学 | Photo-translating, exposure controllable synchronous sampling-hold device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103646819A (en) * | 2013-12-13 | 2014-03-19 | 成都旭顺电子有限责任公司 | Vacuum switch vacuum degree on-line monitoring system |
| CN103646819B (en) * | 2013-12-13 | 2015-07-29 | 成都旭顺电子有限责任公司 | A kind of vacuum degree of vacuum switch on-line monitoring system |
| CN105277873A (en) * | 2015-10-12 | 2016-01-27 | 三峡大学 | Device for evaluating insulating property of vacuum circuit breaker |
| CN113707494A (en) * | 2021-09-09 | 2021-11-26 | 西安交通大学 | Vacuum degree detection device with vacuum arc-extinguishing chamber embedded electrode and method |
| CN113707494B (en) * | 2021-09-09 | 2022-06-21 | 西安交通大学 | Vacuum degree detection device with vacuum arc-extinguishing chamber embedded electrode and method |
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| CN102589796B (en) | 2015-01-21 |
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